Portable band saw



FIG. 1 is a perspective view, showing the top and front of a portable band saw in accordance with the present invention;

FIG. 2 is a plan view of the bottom;

FIG. 3 is a front elevation view of the saw;

FIG. 4 is a rear elevation;

FIG. 5 is a right side elevation; and

FIG. 6 is a left side elevation. 

The ornamental design for a portable band saw, as shown and described. 